# Thesaurus for Graphic Materials

> identifier for indexing visual (graphic) materials by subject and genre/format, maintained by the United States Library of Congress, Prints and Photographs Division

**Wikidata**: [Q52441805](https://www.wikidata.org/wiki/Q52441805)  
**Source**: https://4ort.xyz/entity/thesaurus-for-graphic-materials


## References

1. [Source](http://id.loc.gov/vocabulary/graphicMaterials)
2. [Source](https://www.loc.gov/pictures/help/#findingtoo)
3. [Source](https://www.loc.gov/pictures/index/formats/)